<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>index</title>
</head>
<body style="display: grid;justify-items: center;align-items: center; min-height: 800px;">
<table style="width: 100%;text-align: center">
    <tr>
        <td height="150"></td>
    </tr>
    <tr>
        <td style="text-align: center">
            <h1>welcome to index page ~~~</h1>
        </td>
    </tr>
</table>
</body>
</html>